76730720 has 48 divisors (see below), whose sum is σ = 197760528. Its totient is φ = 27901440.

The previous prime is 76730681. The next prime is 76730747. The reversal of 76730720 is 2703767.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20039 + ... + 23558.

It is an arithmetic number, because the mean of its divisors is an integer number (4120011).

Almost surely, 2^76730720 is an apocalyptic number.

It is an amenable number.

76730720 is an abundant number, since it is smaller than the sum of its proper divisors (121029808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76730720 is a wasteful number, since it uses less digits than its factorization.

76730720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43623 (or 43615 counting only the distinct ones).

The product of its (nonzero) digits is 12348, while the sum is 32.

The square root of 76730720 is about 8759.6072971338. The cubic root of 76730720 is about 424.9355750095.

The spelling of 76730720 in words is "seventy-six million, seven hundred thirty thousand, seven hundred twenty".